/**
 * --------------------------------------------------------------------------
 * Bootstrap toast.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
 * --------------------------------------------------------------------------
 */

import BaseComponent from './base-component.js';
import EventHandler from './dom/event-handler.js';
import { enableDismissTrigger } from './util/component-functions.js';
import { defineJQueryPlugin, reflow } from './util/index.js';

/**
 * Constants
 */

const NAME = 'toast';
const DATA_KEY = 'bs.toast';
const EVENT_KEY = `.${DATA_KEY}`;

const EVENT_MOUSEOVER = `mouseover${EVENT_KEY}`;
const EVENT_MOUSEOUT = `mouseout${EVENT_KEY}`;
const EVENT_FOCUSIN = `focusin${EVENT_KEY}`;
const EVENT_FOCUSOUT = `focusout${EVENT_KEY}`;
const EVENT_HIDE = `hide${EVENT_KEY}`;
const EVENT_HIDDEN = `hidden${EVENT_KEY}`;
const EVENT_SHOW = `show${EVENT_KEY}`;
const EVENT_SHOWN = `shown${EVENT_KEY}`;

const CLASS_NAME_FADE = 'fade';
const CLASS_NAME_HIDE = 'hide'; // @deprecated - kept here only for backwards compatibility
const CLASS_NAME_SHOW = 'show';
const CLASS_NAME_SHOWING = 'showing';

const DefaultType = {
  animation: 'boolean',
  autohide: 'boolean',
  delay: 'number',
};

const Default = {
  animation: true,
  autohide: true,
  delay: 5000,
};

/**
 * Class definition
 */

class Toast extends BaseComponent {
  constructor(element, config) {
    super(element, config);

    this._timeout = null;
    this._hasMouseInteraction = false;
    this._hasKeyboardInteraction = false;
    this._setListeners();
  }

  // Getters
  static get Default() {
    return Default;
  }

  static get DefaultType() {
    return DefaultType;
  }

  static get NAME() {
    return NAME;
  }

  // Public
  show() {
    const showEvent = EventHandler.trigger(this._element, EVENT_SHOW);

    if (showEvent.defaultPrevented) {
      return;
    }

    this._clearTimeout();

    if (this._config.animation) {
      this._element.classList.add(CLASS_NAME_FADE);
    }

    const complete = () => {
      this._element.classList.remove(CLASS_NAME_SHOWING);
      EventHandler.trigger(this._element, EVENT_SHOWN);

      this._maybeScheduleHide();
    };

    this._element.classList.remove(CLASS_NAME_HIDE); // @deprecated
    reflow(this._element);
    this._element.classList.add(CLASS_NAME_SHOW, CLASS_NAME_SHOWING);

    this._queueCallback(complete, this._element, this._config.animation);
  }

  hide() {
    if (!this.isShown()) {
      return;
    }

    const hideEvent = EventHandler.trigger(this._element, EVENT_HIDE);

    if (hideEvent.defaultPrevented) {
      return;
    }

    const complete = () => {
      this._element.classList.add(CLASS_NAME_HIDE); // @deprecated
      this._element.classList.remove(CLASS_NAME_SHOWING, CLASS_NAME_SHOW);
      EventHandler.trigger(this._element, EVENT_HIDDEN);
    };

    this._element.classList.add(CLASS_NAME_SHOWING);
    this._queueCallback(complete, this._element, this._config.animation);
  }

  dispose() {
    this._clearTimeout();

    if (this.isShown()) {
      this._element.classList.remove(CLASS_NAME_SHOW);
    }

    super.dispose();
  }

  isShown() {
    return this._element.classList.contains(CLASS_NAME_SHOW);
  }

  // Private

  _maybeScheduleHide() {
    if (!this._config.autohide) {
      return;
    }

    if (this._hasMouseInteraction || this._hasKeyboardInteraction) {
      return;
    }

    this._timeout = setTimeout(() => {
      this.hide();
    }, this._config.delay);
  }

  _onInteraction(event, isInteracting) {
    switch (event.type) {
      case 'mouseover':
      case 'mouseout': {
        this._hasMouseInteraction = isInteracting;
        break;
      }

      case 'focusin':
      case 'focusout': {
        this._hasKeyboardInteraction = isInteracting;
        break;
      }

      default: {
        break;
      }
    }

    if (isInteracting) {
      this._clearTimeout();
      return;
    }

    const nextElement = event.relatedTarget;
    if (this._element === nextElement || this._element.contains(nextElement)) {
      return;
    }

    this._maybeScheduleHide();
  }

  _setListeners() {
    EventHandler.on(this._element, EVENT_MOUSEOVER, (event) => this._onInteraction(event, true));
    EventHandler.on(this._element, EVENT_MOUSEOUT, (event) => this._onInteraction(event, false));
    EventHandler.on(this._element, EVENT_FOCUSIN, (event) => this._onInteraction(event, true));
    EventHandler.on(this._element, EVENT_FOCUSOUT, (event) => this._onInteraction(event, false));
  }

  _clearTimeout() {
    clearTimeout(this._timeout);
    this._timeout = null;
  }

  // Static
  static jQueryInterface(config) {
    return this.each(function () {
      const data = Toast.getOrCreateInstance(this, config);

      if (typeof config === 'string') {
        if (typeof data[config] === 'undefined') {
          throw new TypeError(`No method named "${config}"`);
        }

        data[config](this);
      }
    });
  }
}

/**
 * Data API implementation
 */

enableDismissTrigger(Toast);

/**
 * jQuery
 */

defineJQueryPlugin(Toast);

export default Toast;
